CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

What is alpha1 in interDyMFoam

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   July 3, 2012, 11:23
Default What is alpha1 in interDyMFoam
New Member
Join Date: Jul 2012
Posts: 13
Rep Power: 5
physics1 is on a distinguished road
Im trying to simulate the linear motion of an object using interDyMFoam and I was wondering if anyone could tell me what alpha1 actually does. Ive looked through multiple source codes and still cannot figue out what it does.
physics1 is offline   Reply With Quote

Old   July 4, 2012, 07:07
New Member
Join Date: Mar 2012
Posts: 18
Rep Power: 5
anton_lias is on a distinguished road
Hello physics1
I'm not sure, but I thought in "system/setFieldsDict" you defined where one of the phases (alpha1) is and in "0/alpha1" vou defined the BC.

Is this the alpha1 you meant?
anton_lias is offline   Reply With Quote

Old   July 4, 2012, 07:20
Senior Member
romant's Avatar
Roman Thiele
Join Date: Aug 2009
Location: Stockholm, Sweden
Posts: 364
Rep Power: 12
romant is on a distinguished road
alpha1 is the variable defining how much of phase 1 (alpha1) and how much of phase 2 (1-alpha1) is inside a cell. Take a look at the volume of fluid method described by

Hirt, C., Nichols, B., 1981. Volume of fluid (VOF) method for the dynamics of free boundaries1. Journal of Computational Physics 39, 201225.

This will give a better idea of what alpha1 is.
romant is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Formulation in compressibleInterFoam scttmllr OpenFOAM Running, Solving & CFD 52 May 2, 2015 11:42
Problem with FloatingObject Leech OpenFOAM Running, Solving & CFD 10 March 29, 2012 15:24
Multiple floating objects CKH OpenFOAM 10 September 21, 2011 23:13
error using interDyMFoam with kOmegaSST to simulate sloshing anmartin OpenFOAM Running, Solving & CFD 0 July 20, 2010 13:21
alpha or alpha1 in interFoam & interDyMFoam wavytracy OpenFOAM Bugs 3 September 10, 2009 02:51

All times are GMT -4. The time now is 22:46.